Tektronix 191 schematic

TB 9-6625-2176-35

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

CALIBRATION PROCEDURE FOR

CONSTANT AMPLITUDE SIGNAL GENERATOR

AN/USM-272

AND

TEKTRONIX, TYPE 191

Headquarters, Department of the Army, Washington, DC

16 May 1988

TB 9-6625-2176-35, 15 April 1987, is changed as follows:

1. Remove old pages and insert new pages as indicated below. New or changed material is indicated by a vertical

bar in the margin of the page.

Change 2

Remove pages Insert pages

1 and 2 1 and 2 7 and 8 7 and 8

2. File this change sheet in front of the publication for reference purposes.

By Order of the Secretary of the Army:

CARL E. VUONO

General, United States Army

Chief of Staff

Official:

R. L. DILWORTH

Brigadier General, United States Army

The Adjutant General

Distribution: To be distributed in accordance with DA Form 12-34C, Block No. 319, requirements for calibration procedures publications.

PIN NO: 061693-002

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

CALIBRATION PROCEDURE FOR

CONSTANT AMPLITUDE SIGNAL GENERATOR

AN/USM-272

TEKTRONIX, TYPE 191

Headquarters, Department of the Army, Washington, DC

31 March 1988

TB 9-6625-2176-35, 15 April 1987, is changed as follows:

TB 9-6625-2176-35

Change 1

AND

1. Remove old pages and insert new pages as indicated below. New or changed material is indicated by a vertical

bar in the margin of the page.

Remove pages Insert pages

7 and 8 7 and 8

2. File this change sheet in front of the publication for reference purposes.

By Order of the Secretary of the Army:

CARL E. VUONO

General, United States Army

Chief of Staff

Official:

R. L. DILWORTH

Brigadier General, United State Army

The Adjutant General

Distribution: To be distributed in accordance with DA Form 12-34C, Block No. 319, requirements for calibration procedures publications.

THIS PUBLICATION IS A COURTESY QUICK COPY FRCM THE UNITED STATES ARMY PUBLICATICNS DISTRIBUTION CENTER, ST. LOUIS, MISSOURI TO MEET YOUR NEEDS WHILE WE REPLENISH OUR RULAR STOCK.

*TB 9-6625-2176-35

SUPERSEDED COPY DATED 2 AUGUST 1978

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

CALIBRATION PROCEDURE FOR

CONSTANT AMPLITUDE SIGNAL GENERATOR

AN/USM-272 AND TEKTRONIX, TYPE 191

Headquarters, Department of the Army, Washington, DC

15 April 1987

Approved for public release; distribution is unlimited.

REPORTING OF ERRORS

You can help improve this publication by calling attention to errors and by recommending improvements and stating your reasons for the recommendations. Your letter or DA Form 2028, Recommended Changes to Publications, should be mailed directly to Commander, U.S. Army TMDE Support Group, ATTN: AMXTM-LPP, Redstone Arsenal, AL 35898-5400. A reply will be furnished directly to you.

SECTION I. IDENTIFICATION AND DESCRIPTION

Test instrument identification ................................................... 1 2

Forms, records, and reports-.................................................... 2 2

Calibration description.............................................................. 3 2

II. EQUIPMENT REQUIREMENTS

Equipment required.................................................................. 4 3

Accessories required................................................................ 5 3

III. CALIBRATION PROCESS

Preliminary instructions............................................................ 6 4

Equipment setup ..................................................................... 7 4

Amplitude accuracy.................................................................. 8 5

Frequency accuracy................................................................. 9 7

Frequency response................................................................. 10 7

Power supply ........................................................................... 11 9

Final procedure........................................................................ 12 9

Paragraph Page

*This bulletin supersedes TB 11-6625-2384-35, 2 August 1978, including all changes.

SECTION I

IDENTIFICATION AND DESCRIPTION

1. Test Instrument Identification. This bulletin

provides instructions for the calibration of Constant Amplitude Signal Generator, AN/USM-272 and Tektronix, Type 191. The manufacturer's manual and TM 116625-2384-15 were used as the prime data sources in compiling these instructions. The equipment being calibrated will be referred to as the TI (test instrument) throughout this bulletin.

a. Model Variations. None. b. Time and Technique. The time required for

this calibration is approximately 4 hours, using the dc and low frequency technique.

2. Forms, Records, and Reports Table 1. Calibration Description

Test instrument

parameters

Amplitude (at 50 kHz into Range: 0.5 to 5 V 50W load) Accuracy: ±3% of indicated amplitude

Frequency (into 50W load) Range: 50 kHz and 0.35 to 100 MHz Frequency response Range: 0.35 to 100 MHz at .5 to 5.5 V

TB 9-6625-2176-35

a. Forms, records, and reports required for

calibration personnel at all levels are prescribed by TB 750-25.

b. Adjustments to be reported are designated (R) at the end of the sentence in which they appear. When adjustments are in tables, the (R) follows the designated adjustment. Report only those adjustments made and designated with (R).

3. Calibration Description. TI parameters and performance specifications which pertain to this calibration are listed in table 1.

Performance

specifications

Range: 50 to 500 mV Accuracy: ±4% of indicated amplitude Range: 5 to 50 mV Accuracy: ±5% of indicated amplitude

Accuracy: ±2%

Accuracy: £ ±3% from 50 kHz value

Change 2 2

SECTION II

EQUIPMENT REQUIREMENTS

TB 9-6625-2176-35

4. Equipment Required. Table 2 identifies the specific

equipment to be used in this calibration procedure. This equipment is issued with Secondary Transfer Calibration Standards Set AN/GSM-286. Alternate items may be used by the calibrating activity when the equipment listed in table 2 is not available. The items selected must be verified to perform satisfactorily prior to use and must bear evidence of current calibration. The equipment must meet or exceed the minimum use specifications listed in table 2. The accuracies listed in

Table 2. Minimum Specifications of Equipment Required

Item Common name Minimum use

A1 AUTOTRANSFORMER Range: 105 to 125 V ac

Accuracy: ±1%

A2 DC VOLTAGE STANDARD Range: 0 to 5 V dc

Accuracy: ±0.01%

A3 DIGITAL VOLTMETER Range: 0 to -12 V dc

0.0167 to 1.820 V rms Accuracy: ±0.75%

A4 DIFFERENTIAL VOLTMETER Range: 0.9 to 1.1 mV

Accuracy: ±0.75%

A5 FREQUENCY COUNTER Range: 50 kHz to 100 MHz

Accuracy: 0.5%

A6 THERMAL CONVERTER Range: 50 kHz to 100 MHz

at 5 V Accuracy: ±0.75%

table 2 provide a four-to-one ratio between the standard and TI.

5. Accessories Required. The accessories listed in table 3 are issued as indicated in paragraph 4 above and are used in this calibration procedure. When necessary, these items may be substituted by equivalent items, unless specifically prohibited.

specifications

Manufacturer and model

(part number)

General Radio, Model W10MT3AS3 or Ridge, Model 9020F (7910809) John Fluke, Model 332B/AF (332B/AF) Hewlett-Packard, Model 3490AOPT060 (3490AOPT060) Dana, Model 5000, or Dana, Model 5000 w/641 John Fluke, Model 887AB/AN (887AB/AN) Hewlett-Packard, Model 5345A (MIS-28754/1 Type 1) w/5355A and K87-59992A Ballantine, Model 1394A (MIS-10221)

+ 9 hidden pages